angiotensin

noun

1. 1

   Any of several polypeptides that narrow blood vessels and thus regulate arterial pressure.

   “2001: In addition to stimulating the srteries to constrict, angiotensin also acts on the kidneys to suppress urine production, and acts on the brain to stimulate thirst and drinking behaviour. — Leslie Iversen, Drugs: A Very Short Introduction (Oxford 2001, p. 43)”